The linux bootloader for XENON chipsets has been released. I imagine that (for those who didn't update their boxes or can get one not yet updated in the factory) something good is coming soon and this hack is not going to languish in no-man's land.
Also the official XDK has been leaked which may or may not accelerate development. There is some reluctance to use it so as to be able to make all products freely available (i.e. no more xbins)